Journal ArticleDOI
Microstructure and Texture of Cold Rolled and Recrystallized CrNoNi Medium-Entropy Alloy
Gunasekaran Dan Sathiaraj,Werner Skrotzki,R. Jose Immanuel,Aurimas Pukenas,Rolf Schaarschuch,Sushanta Kumar Panigrahi,J. Arout Chelvane,Sumit Kumar +7 more
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TLDR
In this article, an equiatomic CrCoNi medium-entropy alloy plate was heavily deformed by conventional cold rolling and subsequently annealed at different temperatures, and the microstructure and texture evolution of the deformed and annealing sheets were investigated by electron backscatter diffraction and X-ray diffraction.Abstract:
An equiatomic CrCoNi medium-entropy alloy plate was heavily deformed by conventional cold rolling and subsequently annealed at different temperatures. Microstructure and texture evolution of the deformed and annealed sheets were investigated by electron backscatter diffraction and X-ray diffraction. Heavy cold rolling induces an alloy type α-fibre texture with major brass component. This type of texture is indicative of low stacking fault energy of the CrCoNi alloy. Annealing at 700 °C leads to a homogeneously recrystallized microstructure with ultrafine grains of about 800 nm average size. The volume fraction of different texture components is almost similar after annealing at different temperatures. However, the overall texture intensity after annealing is very weak. Finally, in order to understand the microstructure and texture evolution of the CrCoNi alloy, it is critically compared with other low stacking fault energy FCC materials.read more
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Tailoring grain growth and solid solution strengthening of single-phase CrCoNi medium-entropy alloys by solute selection
G.W. Hu,G.W. Hu,Liangcai Zeng,H. Du,H. Du,Xiangfu Liu,Xiangfu Liu,Yuan Wu,Pan Gong,Zitian Fan,Qianqian Hu,E.P. George,E.P. George +12 more
TL;DR: In this article, the authors selected solutes to be added to the CrCoNi medium-entropy alloy (MEA) based on the mismatch of self-diffusion activation energy (SDQ) between the alloying elements and constituent elements of the matrix, and then investigated their grain growth behavior and mechanical properties.
Journal ArticleDOI
A critical review of the mechanical properties of CoCrNi-based medium-entropy alloys
TL;DR: The CoCrNi medium-entropy alloy (MEA) as discussed by the authors is a subset of the Cantor alloy family and has better mechanical properties than the CoCrFeMnNi alloy.
Journal ArticleDOI
Microstructure and texture of CoCrNi medium entropy alloy (MEA) processed by severe cryo-rolling: A study vis-a-vis cold-rolling
TL;DR: The microstructure and texture of severely cryo-rolled and annealed CoCrNi equiatomic medium entropy alloy (MEA) were investigated in the present work.
Journal ArticleDOI
Influences of Thermomechanical Processing by Severe Cold and Warm Rolling on the Microstructure, Texture, and Mechanical Properties of an Equiatomic CoCrNi Medium-Entropy Alloy
TL;DR: In this article, the effects of microstructure, texture, and properties in heavy cold- and warm-rolled equiatomic CoCrNi MEAs during deformation and subsequent annealing were illustrated.
Journal ArticleDOI
Preparation of high-mechanical-property medium-entropy CrCoNi alloy by asymmetric cryorolling
TL;DR: In this paper , a medium entropy alloy (MEA) CrCoNi, cold rolling, asymmetric rolling, cryorolling and asymmetric-cryorolled with subsequent annealing at different temperatures were conducted.
References
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Journal ArticleDOI
Exceptional damage-tolerance of a medium-entropy alloy CrCoNi at cryogenic temperatures
Bernd Gludovatz,Anton Hohenwarter,Keli V.S. Thurston,Keli V.S. Thurston,Hongbin Bei,Zhenggang Wu,Easo P. George,Easo P. George,Easo P. George,Robert O. Ritchie,Robert O. Ritchie +10 more
TL;DR: This work examines an equiatomic medium-entropy alloy containing only three elements, CrCoNi, as a single-phase face-centred cubic solid solution, which displays strength-toughness properties that exceed those of all high-ENTropy alloys and most multi-phase alloys.
Journal ArticleDOI
Tensile properties of high- and medium-entropy alloys
TL;DR: In this article, face-centered-cubic, high and medium-entropy alloys were arc melted, hot-rolled to produce recrystallized sheets, and tensile tested.
Journal ArticleDOI
Reasons for the superior mechanical properties of medium-entropy CrCoNi compared to high-entropy CrMnFeCoNi
TL;DR: The tensile properties of CrCoNi have been shown to be significantly better than those of CrMnFeCoNi, a high-entropy alloy as discussed by the authors, and the deformation mechanism responsible for its superiority has been investigated.
Journal ArticleDOI
Recovery, recrystallization, grain growth and phase stability of a family of FCC-structured multi-component equiatomic solid solution alloys
Zhenggang Wu,Hongbin Bei,F. Otto,F. Otto,George M. Pharr,George M. Pharr,Easo P. George,Easo P. George +7 more
TL;DR: In this article, the authors investigated various binary, ternary and quaternary alloys made from the equiatomic high-entropy alloy FeNiCoCrMn.
Journal ArticleDOI
Heterogeneous precipitation behavior and stacking-fault-mediated deformation in a CoCrNi-based medium-entropy alloy
Yilu Zhao,Tao Yang,Yang Tong,Jing Wang,Junhua Luan,Zengbao Jiao,Da Chen,Yong Yang,Alice Hu,C.T. Liu,Ji-Jung Kai +10 more
TL;DR: In this paper, a high-strength CoCrNi-based medium-entropy alloy hardened by nanoscale L1 2 -(Ni, Co, Cr) 3 (Ti, Al)-type particles with mixing heterogeneous and homogeneous precipitation behaviors was reported.